Conagra Brands, from 2010-2023 (the only years I found data for) has had a net profit margin ranging from -20% to +11% or so. In 2023 their net profit margin was +8%. That doesn't really indicate "greed"flation to me or at least it hasn't been particularly effective. Shrinkflation is just a way to hide increased costs. Wal-Mart has done this for many years with special packaging with many of the products they carry. This is one reason their prices are often lower.

The root problem is inflation. Not greedflation and not shrinkflation. When business operating cots go up, so do consumer prices.